Condenser



W. DUBILIER.

CONDENSER.

APPLICATION FILED AUG. I. 191s.

1,334, 1 39. Patmd Mar. 16, 1920.

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wiLLim DUBILIER, oF NEW YORK, N. Y.

CONDENSED.

' Specification of lLetters Patent.

Application led August 1, 1918. Serial No. 247,741.

To all whom it may concern Be it known that I, WILLIAM DUBiLmR, of New York city, in the county of New York and in the State of New York, have invented a certain new and useful Improvement in Condensers, and do hereby declare that the following is a full, clear, and exact description thereof.

The invention has for an object to so support an electrical ,condenser that any desired amount of compression may be placed upon itselements and maintained thereupon, or adjusted, to hold the condenser firmly in position and keep its elements in proper relation to each other. I

Another object of the invention is to insulate the conducting parts of the condenser in such an eil'ective way as to prevent failure of the insulation at any point.'

Further objects and advantages of the invention will be in part obvious and `in part specifically pointed out in the description hereinafter contained, in wliich is disclosed one embodiment of the invention; such embodiment however, is to be considered merely as illustrative of its principle.

in the drawings:

Figure 1 is a perspective view of a condenser casing and closure suitable for use in my invention;

Fig. 2 is a plan view of the condenser and casing with the closure removed; and

Fig. 3 is a 'transverse section taken centrally of Fig. 2.

1n the embodiment of the invention chosen for illustration, there is provided a condenser 1 consisting or" a plurality of sections 2 suitably connected at points 3, and contained within a box-like casing 4. The particular character of the condenser is not essential to the invention, and it accordingly will not be described in greater detail. A high potential terminal is provided for the condenser, which, in the form shown, has a hearing plate 6 resting upon the top surface of the condenser, and a terminal post 7 which projects outwardly through a hole 8 in an insulating closure 9, for the casing 4. Suitable devices, such as screws 10 are provided to secure the closure 9 in position upon the casing. v

In' apparatus of the type above outlined, it is necessary to maintain a relatively high pressure upon the elements of the condenser in order to keep them in proper relation to each other. Heretofore this has been accompl'ished by providing a closure 9 which. was heavy and strong, and which was forced down by exerting heavy pressure uponftiie screws 10 until all of the edges of the olosure were in firm en Patented Mar. l16, 1920. y

gagement with the top surface 10 of the casing 4. The downward pressure of the closure was transmitted to I the elements of the condenser 1, so as to clamp the condenser between the closure and the bottom of the casing. This construction, however, is open tov certain objections, particularly in that the pressure exerted by the closure could not be adjusted as well as would be desirable, due to the fact that the closure had to be seated against the top surface of the condenser after amount of pressurewould vary considerably in diderent units. bulged undesirably, and it was necessary to adjust all four sides o the closure to eiicect thecompression of the condenser, with the result that the strains upon the closure, and the amount orn compression on the condenser, might vary considerably in different units.

ln order to obviate the above disadvantages the closure 9, in the present invention, is not relied upon to furnish the pres'- sure to compress 'the condenser, but ther elements are employed to accomplish this result. lit is desirable to edect the-compression of the condenser by a member, or members, which have but few bearing points, so that but few adjustments are required to accurately adjust the pressure. For this purpose there is shown, in the present form, a'compressor member 12 which is movably supported adjacent one surface of" the condenser, and the intermediate portion of which bears upon the condenser. present Vinstance this compressor plate 12 is located between the closure 9 and a pair of shoulders 13 upon the side walls of the casing 4 and any desired. number of spacing which the The closure oftenv 1n the l blocks 14EL are placed between the compresextent necessary to place the desired amount of compression upon the elements of the condenser. It willl be observed that the member 12 has three bearing points, that is, at its ends, where the pressure is exerted, and at its intermediate portion, where the pressure is transmitted to the condenser; these points are also substantially in line with each other.

different units may be easily brought to the desired amount, since the compression member may be forced down to any desired position in each case, and the three point bearing of the compressor member insures that its pressure will be uniformly transmitted to the condenser i'n each instance.

Condensers of the above type are ordinarily subjected to very high potentials in use,

and it is therefore necessary to provide effective insulation between the conducting i parts of the condenser such as the connecc1osure,pand through a similar hole 17 in the compressor member 12. Preferably such bushing, whether made separate or integral with 'the closure, extends a certain distance into the spacing block 14a, so asy not to provide a direct line of creepage from the terminal post along the bottom surface of the compressor member., The top surface of the compressor member and the bottom surface ofthe closure 9, may also be providedwith corrugations 18 and 19 respectively, in order to lengthen the creepage distance along such surfaces to the sides-of casing 4, sincev the wax composition ordinarily does not fill the space between the closure and the compressor member. In the -above manner the danger of a failure of insulation between the terminal post and the casing is avoided.

The casing 4 should be as small as possible, but the yconnections must be well insulated from the side walls of such casing, If the composition 15 be relied upon to furnish such insulation, the dimensions of the casing must be made undesirably large. To avoidthis disadvantage, the side walls of the casing may be tapered, so as to space the connections of high potential a greater distance from the casing walls, yand a layer of strong insulation interposed between' the condenser and the side walls of the casing.

With the above construc- Y* tion, the pressure upon the condensers of surface of the compressor member 12, or

along insulating composition 15, to the casing.

Although a specific form of the invention is disclosed, it will be obvious that many of the details may be varied without departing .from the essential .features of the invention, as defined in the following claims.

I claim:

1. -In combination, a condenser casing, a condenser contained therewithin, a compressor member disposed within said casing,

said member being movable toward and from said condenser, and adjustable means for exerting pressure. upon said member to compress the elements of said condenser relatively highly between said member'and a wall of said casing.

2. In combination, a casing, a condenser contained therewithin, a compressor member withiny said casing having its intermediate portion bearing upon the condenser, and adjustable means for exerting pressure upon the ends of said member to compress the elements of said condenser relatively highly between said member and a wall of said casing` whereby a three point support is provided for said compressor member.

3. In combination, a casing and a closure therefor, a condenser contained therewithin, shoulders upon opposite walls of said casing adjacent said closure, a compressormember located between said closure and said shoulders, and adjustable means for forcing the ends of said compressor member toward said shoulders, whereby the intermediate portion of said member compresses to any desired degree the elements-of said condenser.

4. In combination, a condensercasing and a closure therefor, a condenser contained therewithin, a movable compressor member disposed beneath and substantially parallel to said closure and bearing upon said condenser, and adjustable means for forcing 'said compressor vmember toward said condenser to any desired extent, whereby the elements of said condenser are compressed to the desired degree.

5. In combination, a casing, a condenser contained therewithin, a compressor member within said casing bearing against the condenser, a .terminal post for said condenser extending through said lcompressor member, an insulating bushing lsurrounding i tively highly, and an insulating bushingsurrounding said post, said bushing extending beyond both faces of said insulating member.

7. In combination, a casing, a condenser contained therewithin, a terminal post for said condenser projecting to the exterior of the casing, `an insulating member extending across that side of the casing through which the post projects, said member bearing upon4 8. In combination, a conductive casingA and an 4insulating closure therefor, a condenser contained therewithin, an insulating compressor member disposed beneath said closure and bearing upon said condenser, a terminal post for said condenser projecting through said member and closure, an insulating bushing surrounding said post, said bushing extending 'beyond said member and said closure.

9. ln combination, a conductive casing and an insulating closure therefor, a condenser contained therewithin, an insulating compressor member disposed beneath said closure and bearing upon said condenser, a terminal post for said condenser projecting through said member andclosure and means for preventing surface creepage from said post to said casing.

10. ln combination, a conductive casing and an insulating closure therefor, a condenser contained therewithin, an insulating compressor member disposed beneath said closure and bearing upon said condenser, a terminal post for said condenser project! ing through said member and closure, an insulating bushing surrounding said post,

said bushing extending beyond said member and said closure, and means for preventing surface creepage from said post to said casing.

-walls of the casing.

11. In combination, a condenser casing of box-like form having its top side open, a stack of condenser sections horizontally disposed within said casing, a bearing plate overlying the top surface of the upper section, and a compressor member within said casing having its intermediate portion engaging over said bearing plate, and clamping members engaging the ends of said coinpressor member to force its intermediate portion down against said bearing plate to hold said condenser sections under pressure, whereby three bearing points are provided in said compressor member, and a closure extending across the open side of the casing. i

12. ln combination, a casing, a condenser contained therewithin, a terminal post for said condenser projecting to the exterior of said casing, and an insulating yoke extending over the interior portion of said post and between such portion and outer side 13. ln combination, a casing, a condenser contained therein, a terminal post for said condenser projecting to the exterior of said casing, an insulating yoke extending over the interior portion of said post and between such portion and outer side walls of the casing, the legs of said yoke being interposed between sides of the condenser and casing.

la. ln combination, a casing, a condenser contained therewithin, a terminal post for said condenser projecting to the exterior ot the casing, an insulating member extending across that side of the casing through which the post projects, an insulating bushing surrounding said post, and an insulating yoke disposed beneath said insulating member and over said condenser, said yoke extending over the interior portion of said post and between such portion and outer side walls of the casing.

l5. ln combination, a condenser casing, a condenser comprising a plurality of connected sections contained within said casing, a compressor plate within the casing disposed across the open side of said casing and extending transversely across said sections, and clamping members engaging said compressor plate to force the same against the condenser to place its sections under relatively high compression.

In testimony that l claim the foregoing l have hereunto set my hand.

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